package com.myproject.utils;

import org.apache.tools.zip.ZipEntry;
import org.apache.tools.zip.ZipFile;

import java.io.*;
import java.util.Enumeration;

public class ZipUtil {

    private static final int buffer = 2048;
    /**
     * 解压Zip文件
     * @param path 文件目录
     */
    public static void unZip(String path)
    {
        int count = -1;
        String savepath = "";
        File file = null;
        InputStream is = null;
        FileOutputStream fos = null;
        BufferedOutputStream bos = null;
        savepath = path.substring(0, path.lastIndexOf(".")) + File.separator; //保存解压文件目录
        new File(savepath).mkdir(); //创建保存目录
        ZipFile zipFile = null;
        try
        {
            zipFile = new ZipFile(path,"gbk"); //解决中文乱码问题
            Enumeration<?> entries = zipFile.getEntries();
            while(entries.hasMoreElements())
            {
                byte buf[] = new byte[buffer];
                ZipEntry entry = (ZipEntry)entries.nextElement();
                String filename = entry.getName();
                boolean ismkdir = false;
                if(filename.lastIndexOf("/") != -1){ //检查此文件是否带有文件夹
                    ismkdir = true;
                }
                filename = savepath + filename;
                if(entry.isDirectory()){ //如果是文件夹先创建
                    file = new File(filename);
                    file.mkdirs();
                    continue;
                }
                file = new File(filename);
                if(!file.exists()){ //如果是目录先创建
                    if(ismkdir){
                        new File(filename.substring(0, filename.lastIndexOf("/"))).mkdirs(); //目录先创建
                    }
                }
                file.createNewFile(); //创建文件
                is = zipFile.getInputStream(entry);
                fos = new FileOutputStream(file);
                bos = new BufferedOutputStream(fos, buffer);
                while((count = is.read(buf)) > -1)
                {
                    bos.write(buf, 0, count);
                }
                bos.flush();
                bos.close();
                fos.close();
                is.close();
            }
            zipFile.close();
        }catch(IOException ioe){
            ioe.printStackTrace();
        }finally{
            try{
                if(bos != null){
                    bos.close();
                }
                if(fos != null) {
                    fos.close();
                }
                if(is != null){
                    is.close();
                }
                if(zipFile != null){
                    zipFile.close();
                }
            }catch(Exception e) {
                e.printStackTrace();
            }
        }
    }
/*public static void main(String[] args)
  {
    unZip("F:\\110000002.zip");
    String f = "F:\\110000002";
    File file = new File(f);
    String[] test=file.list();
    for(int i=0;i<test.length;i++){
      System.out.println(test[i]);
    }
    System.out.println("------------------");
    String fileName = "";
    File[] tempList = file.listFiles();
    for (int i = 0; i < tempList.length; i++) {
      if (tempList[i].isFile()) {
        System.out.println("文   件："+tempList[i]);
        fileName = tempList[i].getName();
        System.out.println("文件名："+fileName);
      }
      if (tempList[i].isDirectory()) {
        System.out.println("文件夹："+tempList[i]);
      }
    }
  } */
}
